Demo Android APP, no backend, just frontend consumming WS

I need a demo app All the proccess will do my system, so I need a great frontend, no backend, no DB, all info will send my Webservices. ****Sources should be included. The app should has/do: Login, consuming a WebService, send username and password to validate Retrieve a list of services depending on logged user, (via WS) The main idea is proccess a transaccion via the app To proceess a transaction: Show a list of services and choose one of them once chosen one, Show a form to write an code, or phone number, or id using this input, consuming a ws and retrieve the answer to shown on the front Example: Services List/utilities bills: Water, Phone, electricity I choose Water Show the water form (phone form could be different) and ask user for code: I will write Code:12586 Click the button: Search Via WS if available has to show the answer like this Jhon Smith $45 Click the button: Proccess Wait for WS process and show ok or any error. **I will not provide any WS, you have to build your own and dummy DB. screens needed Login Menu: 1.-Proccessing 2.-Search 3.-Status 4.-Add 5.-My Account Login Request Username and Password send the data to WS and get the answer. everytime user opens the app ask for login. 1: Proccessing Depending logged user, the WS will sent a services list (Phone Bill, Water, Cable, etc ) the user has to select one of them, and depending services the app has to show a form Phone Bill -Ask for phone number and press the search button -get the ws answer and show the info, example -Jhon Smith $45 -Press proccess button with the data and gps location and get the answer Water -ask for water code -ask for amount -press proccess button with the data and gps location and get the answer 2: Search Using search filters like date, service, value and code press the search button and get the answer and show all the answer into a grid 3:Status Ask for WS and Show 4 lines 4:Add Using a form with lists, texts, radio buttons and checks ask for info and send to WS. 5: My Account Show and allow to change name, last name, password, email, etc.